Free Prosthodontic Dental MCQ

Post graduate prosthodontic MCQ test

1) Which of the following characteristics of inlay wax is its major disadvantage ?

a) flow.
b) rigidity.
c) hardness.
d) high thermal expansion.

2) When porcelain is baked against metal, it should possess a

a) high fusion expansion.
b) high fusion temperature.
c) linear coefficient of thermal expansion less than, but close to,that of the metal.
d) linear coefficient of thermal expansion greater than but close to that of metal.

3) As the gold content of a dental solder decreases,the

a) hardness decreases.
b) ductility increases.
c) corrosion resistance decreases.
d) ultimate tensile strength decreases.

4) Reversible hydrocolloids exhibit the property of transformation from sol to gel and gel to sol as a function of the

a) concentration of the fillers and plasticizers.
b) percentage of composition by weight of water.
c) concentration of potassium sulfate.
d) temperature.

5) An anterior fixed partial denture is contraindicated when

a) abutment teeth are noncarious.
b) an abutment tooth is inclined 15 degree but is otherwise sound.
c) there is considerable resorption of the residual ridge.
d) crowns of the abutment teeth are extremely long owing to gingival recession.

6) In which of the following properties does a type IV partial denture gold alloy exceed a base-metal partial denture alloy in numerical value

a) hardness.
b) specific gravity.
c) casting shrinkage.
d) fusion temperature.

7) Within practical limits, when the water/ powder ratio is increased beyond the recommended amount in mixing plaster, the

a) setting time is increased.
b) setting expansion is decreased.
c) compressive strength is decreased.
d) all of the above.

8) In processing an acrylic denture in a water bath, a proper heating cycle is desired because of the possibility of

a) warpage.
b) shrinkage of the denture.
c) porosity due to boiling of the monomer.
d) crazing of the denture base around necks of the teeth.

9) An over load of the mucosa will occur if the

a) teeth used for replacement are nonanatomic.
b) bases covering the area are too small in out line.
c) bases covering the area are too large in out line.
d) bases covering the area are overextended distally.

10) In an alginate impression material, trisodium phosphate is the

a) filler.
b) reactor.
c) retarder.
d) acclerator.

free count

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